Effects of acute exercise on inspiratory muscle strength and endurance in untrained women and men

Joaquin Gonzales, James S. Williams

Research output: Contribution to journalArticlepeer-review

Abstract

Aim. The purpose of this study was to determine if sex differences are present in exercise-induced inspiratory muscle function in untrained humans. Methods. Eight young untrained women (23.8  1.5 y, VO2max = 33.7 ± 4.0 ml/kg/min) and men (26.1  2.0 y, VO2max = 36.7 ± 1.2 ml/kg/min) performed high-intensity cycling exercise (80% WRmax) to exhaustion. Inspiratory muscle strength and endurance were assessed pre- and post-exercise by measuring maximal inspiratory pressure (PImax) and time to task failure during a constant-load breathing test (CLBT), respectively. Results. Relative intensity and time to exhaustion during high-intensity exercise was similar between women and men. Prior to exercise, PImax was similar between sexes. After exercise, women and men showed similar reductions in PImax (W: 140.4 ± 9.9 to 124.6 ± 6.7 cmH2O, p < 0.05; M: 147.7 ± 10.2 to 128.1 ± 11.1 cmH2O, p < 0.05). No sex difference was found in the magnitude change in PImax following exercise (W: 15.8 ± 7.9
Original languageEnglish
Pages (from-to)268-273
JournalJournal of Sports Medicine and Physical Fitness
StatePublished - Sep 2010

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